Door-operating mechanism



June 3, 1930. ECROWLEY 1,751,008

DOOR OPERATING MECHANISM Filed July 15-, 1929 2 Sheets-Sheet];-

ATTORNEY June 3, 1930. F. P. CROWLEY ,76

' DOOR OPERATING MECHANISM Filed July 15, 1929 2 Sheets-Sheet 2 INVENTORI fluid f? fiwalay /Zm 4 7mm M ATTORNEY aw a Q AM a Z i 6m E R? f 1 +2 WU m Z E WQ MT x M W Patented June 3, 1930 (UNITED STATES PATENT. OFFICE) FRANK 1?. CROWLEY, OF NORTH IBEBGEN, NEW JERSEY DOOR-OPERATING MECHANISM Application filed July 13,

by the operator of the car without'the necessityof leaving the drivers seat:

- Other objects will appear from the following detailed description of one embodiment of the invention.

In-the'drawings comprising two sheets of six figures, numbered Figures 1 to 6 inclusive:

Fig. 1, is a front elevation of a garage emgodying the improved mechanically operated oor;

Fig. 2, is a side elevation of the garage of Fig. 1.

Fig. 3, is an enlarged top view of the operating mechanism, taken along theline 33 of Fig. 2, looking in the direction of the arrows; I r

Fig.4, is a vertical section of a portion of the operating mechanism, taken along the line 4-4 of Fig. 3, looking in the direction of the arrows; 1 T Fig. 5, is an enlarged detail view of the locking mechanism; and I Fig. 6, is a horizontal section of the locking mechanism of Fig. 5, taken along the line 66 of Fig; 5, looking in the direction of-the arrows.

Like reference characters designate corresponding partsthroughout, the several fig ures.

The embodiment of the invention set forth in the drawings is purely illustrative of the inventive idea; and is notvintended to limit or restrict the inventionin any way.

The garage 7 (Figs. 1 and 2) is provided with a door 8 (Figs. 3 and 4), which is '1 equipped with the machanically operating i929. Seria1No.377,'936.

from one position of rest to another.

mechanism of the invention. Bars 9 and 10 (Fig. 3) are secured in spaced relation to the door 8 by means of plates'll-and 12. Supports 13 and 14 are provided to which bars 9 and 10 are pivotally mounted, as indicated 'at 15 and 16, respectively.

19 to the-door bar 9. counterweight 18 A counterweight 17 is adj ustably secured by means of set screw may be similarly adjustably secured to the door bar 10. The counterwei'ghts 17 and 18 are ofany suitable weight, and are so ad- 'justed relative, to the pivotal points 15 and 16 that the application of a comparatively negligible forcewill cause the door 8 to move In other words the total force exerted by the weight of door 8 about pivotal points-15 and 16 by way of door bars 9 and 10, is-approximately equal and'opposite to the sumof the forces exerted by weights 17 and 18 about pivotal points 15 and 16, by way of door bars 9 and 10.

Adjacent the upper end .of the door (Fig.

3), a shaft 20 is journalled as at 43 and 44 to any suitable support. Sprocket wheels 21 and 22 are secured adjacent either end of shaft 20, to permit the shaft 20 and sprocket wheels 21. and 22 to rotate in unison. Each of said sprocket wheels 21 and 22, controls I the movement of one of the endless chains 23 directions about the pivotal points 15 and 311C118, to be gularly displaced in opposite 16. lVhen the door is in the closed position as indicated in Fig. 4, locking means is provided. to so retain it,- thus preventing the door from being opened from the outside unless the master key is first inserted inlock This locking means 38 (Figs. 4 and 5). may consist of the locking bar 27 (Fig. 4) adapted, at 42, to engage tlie door bar 9,

Lexi

which when positioned as indicated in bold outline (Fig. 4), is adapted to retain the door in locked position. The locking bar 27 may be L shaped and pivoted at its elbow, as at 28, and a stud 29 may be provided on pulley wheel 34, to control the movement of locking bar 27; the clockwise rotation of pulley wheel 34, being adapted to cause stud 29 to force the locking bar 27 from the bold outline to the dotted line position, (Fig. 4) to unlock door 8.

Manually operated means operable to control the movement of the mechanically controlled inechanism is provided.

Said manually operated means may he of any preferred form so long as the same is placed in such a position as to be readily accessible to the seated operator of the automobile without obstructing or impairing the cars freedom of ingress and egress with respect to the garage. As disclosed in the drawings, said manually operated means may comprise a movable arm 30, pivoted at 31, having a counterweight 33 adjustably secared to it inner end, whereby in the normal po it'on of arm 30, counterweight 33 raises outwardly projecting arm 30 upwards, clear of the roof of the passing automobile. A flexible cord or chain 32 hange suspended from the arm 30 to afford means, easily accessible to the operator of the automobile, for pulling arm 30 downwards to the dotted line position (Fig. 4), when the lock mechanism 38, and the operating handles 40 and 41, be-

come readily accessible tot-he car operator. l/Vhen arm 30 and cord 32 are released, counterweight 33 once more raises arm 30 upwards to the bold outline position of Fig. 4.

The arm 30 is also a housing for the manually controlled mechanism used for initiating the movement of the mechanically operated mechanism. The manual mechanism may consist of an endless belt or cable 35 (Figs. 5 l and 6) passing over toothed pulley wheel 36,

which is rotatably mounted on a bearing 37, positioned adjacent the outer end ofthe arm 30, and pulley wheel 34 (Fig. 4), which is secured to the shaft 20 to impart rotary movement to shaft 20, whenever endless belt 35 is moved by the operation of one (or more) operating handles 40 or 41 One or more operating handles, 40 and 41, are secured to the endless belt or cable 35 and are freely slidable in the longitudinal recesses 45 and 46in the arm 30.

Locking means to prevent the unauthorized operation of the mechanism is likewise provided. It consists of any preferred form of lock 38, which in locked position may cause a locking pawl 39 to engage one of the teeth of pulley 36 to prevent the pulley from rotating, until the pawl 39 has first been disengaged by the turning of the key in lock 38.

The principle of operation is as follows: lVhen the car approaches the garage enmemos trance, the operator merely reaches out and seizes the flexible cord or chain 32. and pulls arm 30 downwards. The key is'inserted in lock 38 and pawl 39 is disengaged. The handle 40 is movedto the right, causing the endless belt or cable 35 to impart a clockwise rotary movement to pulley wheel 34, shaft 20 and sprocket wheels 21 and 22. Sprocket wheels 21 and 22- in turn impart a clockwise rotary movement by wa of the endless chains 23 and 24 to the sproc et wheels 25 and 26, and the clockwise rotation of sprocket wheels 25 and 26 in turn causes the door bars 9 and 10 to tend to swing through the arc of a circle I from the position shown in bold outline, to the position shown in dotted lines in Fig. 4. The movement of the door bars 8 and 9, however, is momentarily arrested by the'locking bar 27, the lower end whereof is so bent as to form means for engaging door bar 9, as indi cated at 42 (Figs. 3 and 4). The continued rotarymovement of pulley wheel 34, however, causes stud 29 to engage against the projecting foot 47 of locking bar 27, thereby forcing the locking bar outwards to the dotted line position (Fig. 4). Bars 9 and 10 are now free to swing to the dotted line position (Fig. 4), and in so doing cause door 8 to move from the normally closed position shown in bold outline in Fig. 4, to the dotted line position of the same figure. The operator may now release the handle 30, thereby allowing it to return to its normal position under the influence of the counterweight 33, and theautomobile may now be moved into the garage without encountering any obstruction.

Upon leaving the garage, door 8 is closed wheel 34, shaft 20 and sprocket wheels 2125-" and 22 26, whereby door bars 9 and 10, and door 8, swing from the dotted line (open) position to the normal (closed) position (Fig). 4) thus closing the garage door. Locking ar 27 re-engages, at 42, with door bar 9, the key is withdrawn from lock 38 causlng the locking pawl 39 to engage and lock toothed pulley wheel 36, movable arm 30 is released and returns to the horizontal posi tion, and the device is restored to normal.

What is claimed is: x

1. In a manual door operating" mechanism and in combination a door bar, a pivotal support therefor, a counterweight secured adjacent one end of said bar, chain and sprocket mechanism operable to cause said door bar to swing from the normal to the open position of the door, and manually controlled means for initiating the movement of said mechanism.

2. In a manual door operating mechanism l.

and in combination a counterbalanced door bar, a pivotal support therefor, chain and sprocket mechanism for, imparting a swinging, a bar secured to the door, a pivotal support for the bar, a counterweight secured to the bar to counterbalance'the weight of the door, a rotatably mounted sprocket wheel operable to impart movement to the bar to open the door, and manually o erated means for controlling the rotation o the sprocket wheel.

5. The combination with a door of manual means for opening and closing the same comprising, a bar secured to the door, a pivotal support for the bar, a counterweight se-.-

cured to the bar to counterbalance the weight of the door, a sprocket wheel, rotatable in one direction to impart movement to the bar to open, and in the other-direction, to close,

the door, and manually operated means for controlling the direction of movement of the J sprocket wheel.

6. The combination with a door of manual means for opening and closing the same comprising, a counterbalanced pivotallysupported bar mechanically coupled to said door to raise and lower the door in the process of opening and closing the same, the door in its open position leaving the entrance clear to afford free ingress or egress, chain and the'door and in the other direction, to s'win the bar member downwards to lower an close'the door, and manually operated means so positioned as to be readily accessible to the seated car operator to control the direction of operation of said mechanism.

8. The combination with a garage entrance ing the same comprising, a bar mechanically coupled to said door, .a pivotal support for said bar to permit swinging movement of the bar to raise and lower:the door in the operation of opening and closingthe'same, the door in its openv position permitting unobstructed ingress and egress to the garage entrance, means ,for counterbalancing the weight of the door and bar,. transmission mechanism operable inone direction to swing the bar member upwards to raise and open the door and in the other direction to SWlIl the bar memberv downwards to lower an close'the door, manually operated means so positioned as to be readily accessible to the seated car operator to control the direction of operation of said mechanism, and a lock for p'recluding'unauthorized operation of the manually operated means.

FRANK P; CROWLEY.

sprocket mechanism operable in one direction to swing the bar member upwards to raise and open the door and in the other direction to swing said bar member downwards to lower and close the door, and manj ually operated means for controlling the direction of operation of said mechanism.

7. The combination with a garage entrance door of manual means for opening and closing the same comprising, a bar mechanically coupled to said door, a pivotal support for said bar to permit swinging movement of the bar to raise and lower the door in the operation of opening and closing the same, the

door in its open position permitting unobstructed ingress and egress to thegarage entrance, means for counterbalancing the weight of the door and bar, transmission mechanism-o erable in one direction to swing the bar mem er upwards to raise and open door of manual means for opening and closv 

